JPH05212800A - Molding component having adhesive layer - Google Patents

Abstract

PURPOSE: To provide a molding member which can be economically manufactured from a liquid or paste molding material and can satisfy various functional requirements for demonstrating reliable adhesive properties against another member. CONSTITUTION: An adhesive layer 2 is equipped on a molding member 1 to serve for adhesion with another member and protruded parts 4, 5 are equipped on both side of the adhesive layer 2. The adhesive layer 2 is guided into a mold before manufacture of the molding member 1 to adhere the protruded part 5 on one side of the adhesive layer 2 to an uncured molding member. The protruding part 4 on the adhesive surface on outward exposed side after releasing of the molding member 1 supports an adhesive for combining with another member.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a molded member made of a liquid or paste material, and more particularly to a molded member having an adhesive layer for bonding with another member.

[0002]

2. Description of the Related Art Recently, as a molded member made of a liquid or pasty material, a member which is bonded to each other by an adhesive has become widespread. Molded parts of this kind are usually made of various organic or inorganic materials. Examples of the material used include inorganic materials such as cement for structural members. In this case, the structural member is placed in a mold as a mold.
Furthermore, it is also possible to use organic synthetic fibers as a material.

Adhesive bonding of such molded parts has various advantages, and in particular it is very advantageous from an economic point of view. Since no special coupling element is required, not only the consumption of a large number of coupling elements can be avoided, but also damage due to improper use of the coupling elements can be prevented.

A problem with the bonding technique described above is the need to complete the bonding in a very short time. For that purpose a highly clean adhesive layer with a predetermined geometry is required,
It is arguable that the cost of such preparatory work is disadvantageous. As a preparatory work, brushing, sandblasting, etching, etc. are usually performed, but considerable energy is consumed at that time, and in addition, not only the molded member but also the surrounding environment may be polluted.

[0005]

DISCLOSURE OF THE INVENTION An object of the present invention is to propose a molded member which can be manufactured economically and which can satisfy various functional requirements required for exhibiting a reliable adhesive property to another member. To do.

In order to solve this problem, in the molded member according to the present invention, an adhesive layer used for bonding with another member is constituted by a film arranged in a mold prior to the production of the molded member. The film is characterized in that both surfaces of the film are formed as surfaces having protrusions.

That is, according to the present invention, an adhesive layer prepared in advance is provided on the molded member prior to the production of the molded member. The adhesive layer is formed as an existing double-sided adhesive film having protrusions on both sides, and the film is adhered to the molding member on one surface and is adhered to another member on the other surface. In order to arrange the film in the mold prior to the molding of the molding member, the liquid or pasty material is adhered to the film on the film surface and the protrusions on the side away from the mold, and on the side facing the mold. Does not reach the film surface. After the mold member is released from the mold, the film surface and the protrusions on the side which has been opposed to the mold until then are exposed to the outside without being covered with the liquid or pasty material. The exposed surface of the film and the protrusions form an adhesive layer that has been prepared in advance to exert sufficient functional properties. Therefore, the molded member can be immediately bonded to another member, for example, another molded member having a similar adhesive layer, without any special pretreatment.

Another possibility of producing the molded part of the present invention is that the film having projections on both sides is not completely cured by at least partially releasing the mold before the curing of the molded part is completed. It can be pressed against the surface.

It is possible to properly prevent the film surface on the side facing the molding die from being contaminated by a liquid component (for example, cement milk when cement is used as a material), other impurities, etc. at the manufacturing stage of the molded member. Therefore, the surface of the film may be covered with a protective sheet such as synthetic resin or paper.

The film is advantageously constituted by a support to which the protrusions can be attached. Such a support can be made of a single material or a composite material, and examples of the material include a metal material, a fiber material, and a cement. Further, the support can be made of, for example, polymethylmethacrylate resin, polyethylene resin, polyurethane resin, rubber-like polyurethane resin, or the like.

Of the constituent materials of the above-mentioned support, especially synthetic resin or cement can be used as a fiber-reinforced composite material reinforced by fibers such as glass fiber, metal fiber and carbon fiber.

Whether a fiber-reinforced composite material or not,
For any support, the protrusions are sand, silica,
Corundum, metal shot, etc. are suitable. The constituent material of the protrusion may be integrally bonded or adhered to the support. For example, when a resin material is used as the support, both can be tightly adhered by applying the constituent material of the protrusion before the resin material of the support is cured.

Another possibility of producing a film with protrusions on both sides is to coat the resin on a non-adhesive substrate and subsequently sprinkle with sand, silica or the like. After curing the applied resin, reverse the film with the protrusions adhered on one side and return it to the non-adhesive base layer, and apply the resin on the other surface exposed as a result, sand, silica, etc. Sprinkle on. The thus-produced film having protrusions on both sides is placed in a forming die prior to the production of the forming member. In this case, it is desirable to perform proper positioning so that the film is fixed at a predetermined position in the mold.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described more specifically with reference to the illustrated embodiments.

FIG. 1 shows a molded body 1 molded by injection molding of synthetic resin or casting of cement, for example, in a released state from a molding die (not shown) such as a die or a mold. The molded body 1 is provided with the adhesive layer 2 exposed along one side surface in the longitudinal direction. In particular, as shown in FIG.
The adhesive layer 2 has a structure in which projections 4 and 5 are provided on both surfaces. In contrast to the protrusion 5 on one surface of the adhesive layer 2 bonded to the molded body 1, the protrusion 4 on the other surface of the adhesive layer 2 is exposed to the outside. These protrusions 4 exert a function of holding an adhesive for bonding the molded body 1 to another member (not shown), for example, another molded body having a similar adhesive layer.

A method of manufacturing the adhesive layer 2 similar to that shown in FIGS. 1 and 2 will be described below with reference to FIGS. 3 to 6. That is, in the first step shown in FIG. 3, resin is applied to the non-adhesive surface of the base layer 6. This resin constitutes a part of the film 3. As shown in FIG. 4, in the second step, sand, silica, or the like is sprinkled on the resin before curing to form the protrusion 4 on one side. After the applied resin is cured, the film 3 is inverted and placed on the non-adhesive surface of the base layer 6 in the third step shown in FIG.
The resin is applied again to the surface of the film 3 where is not provided. Finally, in a fourth step shown in FIG. 6, sand, silica or the like is sprinkled before the applied resin is cured to form the protrusion 5 on the other surface. After the entire film 3 is completely cured, the film 3 is separated from the base layer 6, and the adhesive layer 2 including the film 3 and the protrusions 4 and 5 on both sides is prepared. The prepared adhesive layer 2 is introduced into the molding die prior to the production of the molding member 1, and positioned and fixed at a predetermined position.

[Brief description of drawings]

FIG. 1 is a perspective view showing a molded body provided with an adhesive layer according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view showing a first manufacturing process of a film as an adhesive layer provided on a molded body.

FIG. 4 is a perspective view showing a second manufacturing process of the film.

FIG. 5 is a perspective view showing a third manufacturing process of the film.

FIG. 6 is a perspective view showing a fourth manufacturing process of the film.

[Explanation of symbols]

 1 Molded member 2 Adhesive layer 3 Film 4, 5 Projection

Claims (5)

[Claims] 1. A molded member (1) made of a liquid or pasty material, which has an adhesive layer (2) for bonding with another member, wherein the adhesive layer (2) is replaced with the molded member (1). 1) The film (3) is placed in a mold prior to the production, and both sides of the film (3) are formed as surfaces having protrusions (4, 5). Molded member to be. 2. The molded member according to claim 1, wherein the film (3) is composed of a support to which the protrusions (4, 5) are adhered. 3. The molded member according to claim 2, wherein the support is made of a resin material. 4. The molded member according to claim 3, wherein the resin material is glass fiber reinforced resin, metal fiber reinforced resin,
A molded member comprising a fiber reinforced resin such as carbon fiber reinforced resin. 5. The molding member according to claim 1, wherein the protrusions (4, 5) are made of sand, silica, corundum, metal shot, or the like. Element.